THE PEACH-TREE BAKKBEETLE. 93 



United States; and more recently experiments liave been carried out 

 by the Ontario experiment station in the district of Xiasfara. In 

 looking over the jiast literature it is noticed that the injury done by 

 the beetle has increased materially Avith the increased planting of 

 ■peach and cherry, and the species has thus become one of economic 

 importance. 



Until the present season (11)08) few direct measures had been 

 taken to combat this barkbeetle, and very little, if anything. AVas 

 knoAvn concerning its lif(> history. Not until recently has it become 

 very injurious to fruit trees, and these are limited to peach, cherry, 

 and wild cherry. The beetles will, however, work on plum trees 

 Avhen confined to that food. So fai- but three localities have been re- 

 ported as being visited with injury to any great extent, these being in 

 the fruit district lying about Lakeside and (iypsum, Ohio; in the 

 vicinity of Cayuga Lake, New Yoi'k. and in the Xiagara district, 

 Ontario Province, Canada. The effects of the l)eetles' work are very 

 serious in all trees attacked. 



The peach-tree barkbeetle is a native of this country, and until 

 cultivated trees were introduced nuist have held to forest trees for 

 food and breeding places. The work of the beetle is similar to that 

 of the fruit-tree barkbeetle {Scoh/fiis rvgvlosus Eatz.). and there 

 exists a nuirked siuiilarity in the beetles themselves b}' Avhich the 

 two species inay be easily confused. 



DISTRIBUTION. 



Observations and reports show the distribution, in so far as known, 

 to be as follows: New York, Pennsylvania, Maryland, Virginia, West 

 Virginia. Ohio, and ^Michigan, and from the Niagara district, Onta- 

 rio Province, Canada. Field notes on this species, in the branch of 

 forest insect investigations. Bureau of Entomology, taken by Doctor 

 Hopkins and Mr. W. F. Fiske. indicate that the species is found 

 throughout almost all of West Virginia, and that it occurs in North 

 Carolina and New Hampshire. 



OCCURRENCE IN OHIO. 



The date of the first appearance of this insect in Ohio is in ques- 

 tion, as it has undoubtedly been in the State for some time, although 

 it has not done any great amount of damage until recently. Some 

 of the orchardists stated that they had seen its work for eight or ten 

 years, but did not know the cause. An area of about 8 or 10 miles 

 scjuare about Lakeside. Ohio, including the adjacent islands, is badly 

 infested. Outside of this locality the beetles occur east and west to 



